Mitchel pitches a baseball

The forces shown in the force vs time graph

A 1000 kg car traveling

Please help with 17, 18 & 19. I really appreciate it

17. CH6 EQ- Michael pitches a baseball of mass 0.25-kg. The ball arrives at home plate with a speed of 60- m/s and is batted straight back to Dale with a return speed of 50-m/s. If the bat is in contact with the ball for 0.050-s, what is the net force experienced by the ball? 18. CH6 EQ/Concept- The forces shown in the force vs. time graph act on an object. The vertical divisions on the graph represent 2.0-N and the horizontal divisions represent 1.0-s a) Find the impulse for the interval t = 0 to t 50-s. b) If the forces act on a 1.5-kg object that is initially at rest, find the speed att 5.0-s. tis) 19. A 1000-kg car traveling at 20 m/s to the east, rear ends another car traveling in the same direction. The second car has a mass of 1200-kg and is traveling at 15 m/s east. After the collision, the cars stick together. CH6 EQ-What is the final speed of the two cars after the collision? CHS EQ-What percent of the original KE is remains in this system after the collision?